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Compositor calculates data outside border-region render
Closed, ArchivedPublic

Description

System Information
Win7 64bit

Blender Version
Broken: 2.78c

Exact steps for others to reproduce the error

  • Open file
  • Render scene
  • Unmute Blur -> see, how Blender is calculating blur outside borders
  • Mute Blur
  • Check Viewer Border in N-panel
  • Unmute Blur -> blur calculates twice as fast

I think, Viewer Border should be created automatically when Border-region render is enabled

Details

Type
Bug

Event Timeline

Sergey Sharybin (sergey) closed this task as Archived.
Sergey Sharybin (sergey) claimed this task.

Final render and preview are having decoupled render border settings. This way you can keep tweaking some specific area in the compo and hit F12 to have a better idea of what's happening on the frame. There is currently no way to automatically inform compositor that some render result was cropped and that it should not calculate anything outside of that region.

While we agree it might be confusing, currently it's not considered a bug but a subject for improvement (which happens outside of the bug tracker).

Thanks for the report anyway.